Add summary statistics and macroeconomic data files for 2025

- Created summary_statistics.csv with total news articles and key metrics from January 1 to October 13, 2025.
- Added 一号文件十四五十五五规划情况.csv detailing keyword occurrences related to planning documents.
- Introduced 主要宏观经济数据.csv capturing mentions of key economic indicators.
- Included 国外交流随行企业与企业家名单.csv listing leaders and their engagements with foreign enterprises.
- Added 国家领导人考察行程清单.csv documenting leaders' inspection itineraries.
- Created 国际合作与外交动态.csv summarizing international cooperation and diplomatic activities.
- Added 高频行业关键词统计.csv with statistics on frequently mentioned industry keywords.

research/xwlb25_01_25_10/主要宏观经济数据.csv

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+经济指标,提及次数,最新数据时间,数据说明
+投资,263,2025-10-13,基于新闻联播内容提取
+消费,260,2025-10-13,基于新闻联播内容提取
+进出口,194,2025-10-13,基于新闻联播内容提取
+制造业,178,2025-10-13,基于新闻联播内容提取
+贸易,141,2025-10-13,基于新闻联播内容提取
+农业,91,2025-10-13,基于新闻联播内容提取
+就业,88,2025-10-13,基于新闻联播内容提取
+国内生产总值,64,2025-10-13,基于新闻联播内容提取
+经济增长,51,2025-10-13,基于新闻联播内容提取
+服务业,45,2025-10-13,基于新闻联播内容提取
+工业增加值,41,2025-10-13,基于新闻联播内容提取
+固定资产投资,35,2025-10-13,基于新闻联播内容提取
+GDP,35,2025-10-13,基于新闻联播内容提取
+利率,33,2025-10-13,基于新闻联播内容提取
+社会消费品零售总额,21,2025-10-13,基于新闻联播内容提取
+CPI,20,2025-10-13,基于新闻联播内容提取
+外汇储备,10,2025-10-13,基于新闻联播内容提取
+PPI,6,2025-10-13,基于新闻联播内容提取
+失业率,5,2025-10-13,基于新闻联播内容提取
+财政支出,3,2025-10-13,基于新闻联播内容提取